Does anyone know what's the issue with Cindy McCain's right arm?

Question

She doesn't use it, and frequently wears a medical type dressing. I've asked in the Medical category, but couldn't get an appropriate answer.

Answer 1

The wiring in her arm malfunctioned, and the remote control still hasn't been fixed.  

Answer 2

While handshaking Cindy McCain's right   arm was injured with a vigorous hand , it has a cast and a color coordinate cover to go with the color she is currently wearing. Cindy McCain, in the White House!

Answer 3

they say it's from a hard handshake during campaigning with her hubbie.